Discrete monitoring

Housekeeping

• HW for next week: create a study guide outline for the final written and practical exams (details in Google Classrom)

Learning objectives

• Follow SOPs to measure a vertical light profile, YSI parameters, and secchi depth
• Collect water samples
• Follow SOPs to filter water samples for chl a and TSS
• Describe common sources of PAR, secchi, and YSI sampling error and explain whether values would be over- or under-estimated
• Describe common sources of TSS and chl a sampling error and explain whether values would be over- or under-estimated

Resources

• SOP for secchi depth and vertial light profile
• SOP for YSI
• SOP for TSS and chl a filtering
• data spreadsheet
• YSI user manual

Supplies & equipment

• dock lines
• field data sheets
• pencils
• clip boards
• LI-COR
• YSIs
• nalgene bottles
• secchi disks
• filtering gear (vacuum pump, manifold and filtering cup, forceps, filters, foils, skinny sharpies, plastic baggie, DI bottles)

Procedures

1. Filtering slides
2. Calibrate YSIs
3. Knot tying on the dock with dock lines
4. Demo LI-COR, secchi, YSI, collecting water samples from the floating dock
5. Everyone: YSI measurements
6. In River Center lab, demo filtering for TSS & chl a
7. One group go get a water sample and come back up to the lab to filter
8. One group go to the dock and measure secchi and collect a vertical light profile with the LI-COR
9. Switch!
10. Enter data in data spreadsheet